feat: upgrade Google Analytics to gtag.js

index.html

@@ -4,6 +4,17 @@
 		<meta charset="utf-8" />
 		<title>Caesar Schinas</title>
 		<meta name="viewport" content="width=device-width, initial-scale=1">
+
+		<!-- Global site tag (gtag.js) - Google Analytics -->
+		<script async src="https://www.googletagmanager.com/gtag/js?id=UA-837569-4"></script>
+		<script>
+			window.dataLayer = window.dataLayer || [];
+			function gtag(){dataLayer.push(arguments);}
+			gtag('js', new Date());
+
+			gtag('config', 'UA-837569-4');
+		</script>
+
 		<link rel="icon" type="image/jpeg" sizes="500x500" href="./images/caesar.jpg" />
 		<link rel="icon" type="image/webp" sizes="500x500" href="./images/caesar.webp" />
 		<link href="https://fonts.googleapis.com/css?family=Gentium+Basic&amp;subset=latin-ext" rel="stylesheet">
@@ -66,14 +77,5 @@
 				document.getElementById('contact').appendChild(li);
 			})();
 		</script>
-		<script>
-			(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
-			(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
-			m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-			})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
-
-			ga('create', 'UA-837569-4', 'auto');
-			ga('send', 'pageview');
-		</script>
 	</body>
 </html>